Method and system for controlling the speed of a laser pulse
AssigneeCommissariat A L'energie Atomique Et Aux Energies Alternatives
InventorFabien Quere
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Abstract
A method for controlling the speed of a laser pulse includes a step of applying a chirp to the pulse; and a step of focusing the pulse by means of an optical system having a longitudinal chromatic aberration; whereby an intensity peak of the pulse moves along a propagation axis following, over a finite propagation length, a speed profile dependent on the chirp and on the longitudinal chromatic aberration. The use of such a method for accelerating particles via laser, and a system for implementing such a method, are also provided.
Claims11
A method for controlling the speed of a laser pulse comprising:
- a step of applying a chirp to the pulse (IL0);
- and
- a step of focusing the pulse by means of an optical system (SOC) having a longitudinal chromatic aberration;
- whereby an intensity peak of the pulse (ILCPLC) moves along a propagation axis (z) following, over a finite propagation length (zre), a speed profile dependent on said chirp and on said longitudinal chromatic aberration.
Dependencies are inferred from the claim text.